The first might be a pittosporum. The second needs to be seen in bloom.

Are you in SoCal? If so, I'd suggest Pittosporum undulata for the tree/shrub and Clivia minata for the wide bladed plants.

The leaves of the bulb don't look dark and heavy enough for the evergreen Clivia. More like something that goes dormant part of the year, produces ephemeral foliage of lighter color and consistency.

Need something to figure out the size of the leaves on the tree. The other looks like possibly agapanthus from here in San Jose area.

-Babka

It doesn't look like Clivia to me GG. Mine don't have that groove down the centre. I'd say Nerine or Amaryllis if forced to guess without flowers.

LOL! I suggested clivia, as looking at mine, the center grooves are very distinct, much like the plants in the photo! That and the fact that they are very common landscape plantings in SoCal (if that is where the OP is localed). But I agree, it would be very hard to assign a specific ID without seeing the plants in bloom.

I feel pretty confident about the pitt ID, however.

OP, what color are your plant's flowers?

Agreed with Pittosporum, my first guess on other was Agapanthus only because sooooooo common in CA but hard to tell without fls.

I also thought it was agapanthus (and pittosporum)

First one is 100% P. undulatum. I grew up surrounded by these in nearby parks, and while I think they're individually quite a handsome tree, they're horribly invasive in our (Oz) native bush-land.

2nd one looks like a healthy agapanthus to me (another bush invasive here!), but I claim no expertise with these...

Feral Pittosporum

Thank you so much for all your input! Just got a chance to sit down. First of all, I live in San Francisco Bay Area, specifically in the upper Peninsula. The tree in the first photo has a lot of fruits, and some birds like to eat it. But I don't know if it's edible for man. The plant in the 2nd photo dries in late summer or early fall (all the leaves), seem to die, but will grow up again in later winter. I've not seen it in blossom yet.

In the Bay Area ( I'm near San Jose) agapanthus AND clivia don't lose their leaves in winter . I withdraw my suggestion! :-)

-Babka

Yes, the summer dormancy fits Amarylis and Nerine better.